An SPLA soldier is pictured behind a South Sudan flag as he sits on the back of a pick-up truck in Bentiu, Unity state January 12, 2014. South Sudan's army said on Friday it had regained the rebel-held town of Bentiu, restoring government control of Unity state where oil production had been halted by fighting. The rebels said they made a "tactical withdrawal" from Bentiu to avoid civilian casualties. REUTERS/Andreea ...